Gas-furnace.



m gmmm No. 816,276. PATENTED MAR. 27, 1906.

R. s. THOMPSON.

GAS FURNACE.

. AfPLIUATION FILED NOV. 23, 1904.

2 SHEETSSHEET l.

' Suvemkoz attozwu v I 9 M22 fl No. 816,276. I PATBNTED MAR. 27, 1906.

R. S. THOMPSON.

GAS FURNACE.

APPLICATION FILED NOV. 23, 1904.

2 SHEETS-SHEET 2.

w mm (WWII/1m u IIIII rrl nveufoz witnmwa I V q 7 U as M I W M- m Qkw mwxwkm y L J wpwwm- ,g/W, W420 aftoznu a UNITED STATES PATIENT OFFICE.

RALPH S. THOMPSON, OF SPRINGFIELD, OHIO, ASSIGNOR THE SPRIN SrFIELD FURNACE COMPANY, OF SPRINGFIELD, OHIO, A

CORPORATION OF OHIO.

GAS-FURNACE.

Specification of Letters Patent.

eateries Maren 2'7, 1906.

To all 'whom if may concern:

Be it known that I, RALPH S. THOMPSON, a citizen of the United States, residing at Springfield, in the'coun-ty of Clark and State of Ohio, have invented certain new and useful Improvements in Gas-Furnaces, of which the following is a Specification.

My invention relates to heating ap aratus, and particularly to such apparatus e'signed to use gas as fuel.

The object of my invention is to provide a simple compact structure cheap in construction and eflicient in operation, by means of which a high percentage of the heat units usually lost by escape through the chimney may be utilized. This is 'accom lished by the arrangement of the circulation of the smoke and gaseous products of combustion on the way to the chimney and of the air as it passes through the furnace-casing on its way to enter the hot-air-distributing pipes. The relation of these is such that all the heat contained in the gaseous products except a small per cent. which is necessary-to maintain the draft is taken from them by the air and used to heat the building. v p

A further object is to provide a structure in which there shall be a more perfect combustion of fuel.

lVith the above primary and other'incidental objects in view my invention consists of the means, construction, and devices or their equivalents hereinafter described, and set forth in the claims.

In the drawings, Figure 1 is a vertical sectional view of the apparatus. Fig. 2 is a plan view, the top of the casing being removed. Fig. 3 is a detail plan view of one of the separator-rings. Fig. 4 is a detail of the supporting and spacing means for the se arzitor-rings. Fig. 5 is a detail of the ba eplate in the first or uppermost separatorring. Fig. 6 is a detail of the baflle -plate as used in subsequent separator-rings. Fi 7 shows modified form of connecting the rebox with the first of the separator-rings.

Like parts are indicated by similar characters of reference throughout the several views.

In the drawings, ais a cylindrical sheetmetal fire-box having a conical top. The fire-box a is supported by bracket-arms a, which'rest upon the lower or last of the series of separators hereinafter described. A gasburner a of any suitable design is secured v within the fire-box a. A connecting-pipe (1 extends upwardly from the conical top of the fire-box a and in conjunction with a transverse conduit 0 forms-a T, by which the products of combustion are delivered through short vertical conduits b b into the first separator-ring b at two diametrically opposite points.

The separator-rings 1), b b and b are hollow rings of sheet metal, preferably rectangular in cross-section, but may be formed in other shapes. Each succeeding separatorring of the series is of slightly-smaller diameter than that of the ring next above it, and the first and last separator-rings are preferably of greater height than theintermediate The successive separator-rings of the series are connected by short vertical conduits If, and the inlet and outlet of each ring are located at diametrically opposite points. Over the outlet of each separator-ring is placed a bafIie-plate, as shown in Fig. 1' and in detail in Figs. 5 and 6. The baffle-plate c of the first separator-ring 1) extends substantially half-way around said separator-ring, as in Fig. 5. The object of the extended baffleplate 0 is to compel the proper circulation of the products of combustion, which may be admltted to this separator-ring from the transverse conduit a through the conduit 1) immediately over the outlet-conduit 12 The course of the products of combustion is fully indicated by, the arrows in Fig. 1. outlet of each of the subsequent separatorrings there is a comparatively small baffleplate c, as shown in detail in Fig. 6.

The lower separator -ring I) is provided with supports and is at several points braced or trussed by bars (1. Each of the separator-rings is supported upon the ring immediately belowit and is slightly separated therefrom by spacing devices d which are preferably L-shaped pieces of sheet metal secured to said rings.

In order that each ring may be properly located and a stable structure formed, each ring is preferably provided at one point with .a pair of such spacing devices as shown at (1 between the extended arms of which the arm of a spacing device attached to the next suc- Over the separator-rings in the series.

cessive ring is adapted to fit, as illustrated in Fig. 4. Secured to the lowermost separater-ring of the series is a lateral conduitb, communicating with a flue b Surrounding the structure of fire-box and separator-rings and supported by bracketarms 6, resting on the uppermost separatorring I), is a sheet-metal casing ve, which eX- tends downwardly to a point below the lowermost separator, but not entirely to thebase of the structure. The casing is surmounted by a series of hot-air-distributing pipes 6 which lead to the various parts of the buildlng.

edge of the casing e first contacts with the lower separator-ring b and extracts any heat which may still remain in the spent products of combustion passing through said ring 'on their way to the flue. The current of air thus slightly warmed contacts with each successive, ring, acquiring additional heat until it reaches the first separator-ring I), through which are passing the live products of combustion. There the air-current receives a final heating and enters the distributing-pipes at a very high temperature, having in its course extracted from the products of combustion substantially all the heat units contained therein.

In the drawings there are shown but four It is to be understood, however, that the number may be increased or diminished according to the fuel used and its heat-producing qualities, sufficient separator-rings being employed to separate from the products of combustion all. heat units except sufficient to maintain the chimney-draft. I

In Fig. 7 is shown a modified form of connecting the firebox a with the first separatorring I), wherein the transverse conduit a is Since the first or upper separator-ring b is.

omitted and the fire-boJt-and separator connected through an elbow Having thus described my invention, I

'olaime 1. In a heating apparatus-as described, the

combination with a casing, an inlet and an outlet therein, of a series of superposed independent separator-rings, the diameters of the successive separator-rings decreasing in reguconnections between the successive separatorrings and a flue connecting withthelowermost separator-ring whereby the products of combustion will be carried in a downward course through the successive separatorrings, substantially as and for the purpose specified. v

2. In aheating apparatus as described, a

casing an air-inlet and an 'air outlet therein, a

series of superposed separator-rings of various diameters, the external diameter of the uppermost separator-ring being substantially equal to the internal diameter of the casing, and the internal diameter of the lowermosts eparator ring being approximately-equal to the external diameter of the combustion-chamber, and the intermediate separator-rings varying in regular order,

'each separator-ring being separated from ad- ;gacent separator-rings by intervening space;

a-combustion-chamber, connections from the combustion-chamber to the uppermost separator-ring, connections between successive separator-rings and a flue connecting with the lowermost separator ring, the whole composing a structure wherein the products of combustion will be conducted in a downward course from the topmost separator- 

